This module is designed to give the learner an understanding of the nature of light and how its properties are used in the design of spectrophotometers. Problems promote the use of spectrophotometers in qualitative analysis, the optical elements used in a monochromator, and the physical properties of the prism and the diffraction grating. Other…

This series of experiments seeks to provide laboratory exercises which demonstrate concepts in Earth Science, particularly oceanology. Materials used in the experiments are easily obtainable. Examples of experiments include: (1) comparison of water hardness; (2) preparation of fresh water from sea water; (3) determination of water pressure; (4)…

This booklet is for wastewater treatment plant operators who find it difficult to follow the detailed discussions and procedures found in "Standard Methods for the Examination of Water and Wastewater." It is intended to be used with "Standard Methods" available for reference. Included in this publication are chapters on…

This booklet presents some methods of quantitative chemical analysis currently used in the field of fresh water pollution control. Only those tests that may be performed with little or no special reagents or pieces of equipment are listed. The booklet addresses the following determinations: (1) acidity; (2) alkalinity; (3) chloride; (4) hardness;…

Included is a preliminary report of the analysis of questionnaires returned by biologists teaching in two-year colleges. Data are provided on areas of training, type of previous employment, types of courses taught, measures of teaching load, journals used, and salaries and grants received. The reported information includes the following: two-year…

Included are instructional materials designed for use with disadvantaged students who have a limited reading ability and poor command of English. The guide is the first volume of a two volume, one year program in life science and contains these three units and activities: Measurement, 7 activities; Ecology, 12 activities; and Energy Processes, 24…

Included are instructional materials designed for use with disadvantaged students who have a limited reading ability and poor command of English. The guide is the second volume of a two volume, one year program in life science and contains these two units and activities: Reproduction and Development, 21 activities; and Genetics, 10 activities. A…

Students in an introductory biology course had laboratory sessions in one of two patterns: as one three-hour session per week, or as two one-and-one-half hour sessions, one after each lecture. Each of the twelve instructors involved taught one section using each pattern. The Nelson Biology Test, the Watson-Glaser Critical Thinking Appraisal, and a…

A group of introductory college biology students using microscopic slides was compared to another group viewing photographic transparencies in addition to the microscopic slides. Students taught without the supplementary aids performed significantly better on examination questions dealing with the laboratory portion of the course. This unexpected…

The Australian Science Education Project is producing materials designed for use in grades 7-10 of Australian schools. This is the first trial version of a unit investigating microbial action. One of the student booklets contains instructions for the activities demonstrating food decay which all students are expected to complete. The other student…

The Australian Science Education Project is producing material designed for use in grades 7-10 of Australian schools. This is the first trial version of a unit providing instruction in microscopy. Illustrations of each step in setting up, focusing, preparation of mounts, microscopic measurement, and cleaning and packing the microscope are included…

Care and maintenance of snails are described. (BB)

Four examples are given of spectra of organophosphorus compounds which show students how the effects of phosphorus are delt with in nmr spectroscopy. (BB)

This course presents the student with a performance approach to biology. Each technique is covered in standard lecture format and in guided, independent laboratories. Examinations and grading are competency-based and require knowledge of both the use and limitations of the techniques. (BB)

Two papers are reported on, one dealing with a course on inorganic reaction mechanisms for college seniors, and the other on the set-up necessary to provide students with an automatic potentiometric titration facility. (BB)